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Tropical Storm Danas Drops Rain on Eastern China

Tropical Storm Danas dropped rain on eastern China on Tuesday.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Danas was located at latitude 27.6°N and longitude 120.3°E which put the center about 50 miles (80 km) southwest of Wenzhou, China.  Danas was moving toward the west-southwest at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 986 mb.

The center of Tropical Storm Danas made landfall on the east coast of China just to the south of Wenzhou on Tuesday.  The maximum sustained wind speed was 40 m.p.h. (65 km/h) at the time of landfall.  Winds to tropical storm force extended out 120 miles (195 km) from the center of Danas’ circulation.

Tropical Storm Danas will move around the southern side of a high pressure system over eastern Asia.  The high pressure system will steer Danas toward the southwest during the next 24 hours.  On its anticipated track, Tropical Storm Danas will move farther inland over eastern China.

Tropical Storm Danas will weaken gradually as it moves inland over eastern China.  The heaviest rain will be produced by bands in the southern side of Danas’ circulation.  Bands in the northern side of Tropical Storm Danas will consist primarily of showers and lower clouds.

Tropical Storm Danas will drop heavy rain over parts of Zhejiang.  Heavy rain could cause floods in some locations.

The strongest winds will occur in the eastern side of Danas’ circulation which will be over the East China Sea.  Most of the winds over land will be at less than tropical storm force.

Tropical Storm Danas Nears Eastern China

Tropical Storm Danas was nearing eastern China on Monday evening.  At 11:00 p.m. EDT on Monday the center of Tropical Storm Danas was located at latitude 28.1°N and longitude 122.0°E which put the center about 80 miles (130 km) east of Wenzhou, China and about 50 miles (80 km) southeast of Taizhou, China.  Danas was moving toward the north at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 992 mb.

Even though Tropical Storm Danas was over the East China Sea on Monday, Danas’ circulation was still disrupted from the affects of its passage over Taiwan on Sunday.  The distribution of thunderstorms in Tropical Storm Danas was asymmetrical.  Thunderstorms were occurring in bands in the southern part of Danas’ circulation.  Bands in the northern side of Tropical Storm Danas consisted primarily of showers and lower clouds.

Winds to tropical storm force extended out 90 miles (145 km) from the center of Tropical Storm Danas.

Tropical Storm Danas will move through an environment that will be somewhat favorable for intensification during the next few hours. Danas will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge over East China Sea.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Even though Tropical Storm Danas will move through a somewhat favorable environment, Danas may not intensify because of the disruption of its circulation during the passage over Taiwan.

Tropical Storm Danas will move around the southern side of a high pressure system over eastern Asia.  The high pressure system will steer Danas toward the west during the next 24 hours.  On its anticipated track, Tropical Storm Danas will move over eastern China in a few hours.

The center of Tropical Storm Danas is likely to make landfall in China between Taizhou and Wenzhou.  Danas will bring gusty winds and locally heavy rain to Zhejiang.  Heavy rain could cause floods in some locations.

Typhoon Danas Brings Wind and Rain to Taiwan

Typhoon Danas brought strong winds and heavy rain to Taiwan on Sunday.  Danas weakened to a tropical storm after it moved across Taiwan.  At 11:00 p.m. EDT on Sunday the center of Tropical Storm Danas was located at latitude 25.9°N and longitude 121.6°E which put the center about 30 miles (50 km) north-northwest of Taipei, Taiwan.  Danas was moving toward the north-northeast at 22 m.p.h. (35 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 989 mb.

The center of former Typhoon Danas moved north-northeast across western Taiwan on Sunday.  Danas produced strong winds and heavy rains as it moved across Taiwan.  The heaviest rain fell in parts of southern Taiwan and in a few mountain areas where the winds were blowing up the slopes.  The Central Weather Administration’s radar estimated that up to a foot (300 mm) of rain fell in some locations.

Former Typhoon Danas weakened to a tropical storm as it moved across western Taiwan.  The center of Danas’ circulation moved over the East China Sea on Sunday night.  Thunderstorms were still occurring near the center of Tropical Storm Danas.  Thunderstorms were also still occurring in bands revolving around the center of Danas’ circulation.

The distribution of wind speeds in Tropical Storm Danas was asymmetrical.  Winds to tropical storm force extended out 175 miles (280 km) in the eastern side of Danas’ circulation.  Winds to tropical storm force extended out 80 miles (130 km) in the western side of Danas.

Tropical Storm Danas will move through an environment that will be somewhat favorable for intensification during the next 24 hours.  Danas will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the eastern side of an upper level low over eastern China.  The upper level low will produce southwesterly winds that will blow toward the top of Danas’ circulation.  Those winds will cause moderate vertical wind shear.  The wind shear will inhibit intensification, but the shear may not be enough to prevent intensification.  Tropical Storm Danas could intensify during the next 24 hours.

The upper level low over eastern China will steer Tropical Storm Danas toward the north-northeast during the next 24 hours.  On its anticipated track, Danas will move away from Taiwan.  Tropical Storm Danas could approach the east coast of China in 36 hours.

Wind speeds will decrease in Taiwan when Tropical Storm Danas moves farther away.  Heavy rain should also diminish as the circulation around Danas moves away from Taiwan.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Mun weakened east of Japan.  At 11:00 p.m. EDT on Sunday the center of Tropical Storm Mun was located at latitude 35.5°N and longitude 148.7°E which put the center about 520 miles (835 km) east of Tokyo, Japan.  Mun was moving toward the north-northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 986 mb.

Typhoon Danas Hits Taiwan

Typhoon Danas hit Taiwan on Sunday.  At 11:00 a.m. EDT on Sunday the center of Typhoon Danas was located at latitude 23.5°N and longitude 120.0°E which put the center about 75 miles (120 km) southwest of Taichung, Taiwan.  Danas was moving toward the northeast at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h).  The minimum surface pressure was 958 mb.

Typhoon Danas rapidly intensified to the equivalent of a Category 2 hurricane on the Saffir-Simpson Scale as it approached Taiwan on Sunday.  The inner end of a rainband wrapped around the center of Danas’ circulation.  A circular eye with a diameter of 16 miles (26 km) formed at the center of Typhoon Danas.  Other bands of showers and thunderstorms were revolving around the core of Danas’ circulation.

The size of the circulation around Typhoon Danas increased when Danas rapidly intensified.  Winds to typhoon force extended out 35 miles (55 km) from the center of Danas’ circulation.  Winds to tropical storm force extended out 160 miles (260 km) in the eastern side of Typhoon Danas.  Winds to tropical storm force extended out 85 miles (135 km) in the western side of Danas.

The Hurricane Intensity Index (HII) for Typhoon Danas is 17.8.  The Hurricane Size Index (HSI) is 14.4 and the Hurricane Wind Intensity Size Index (HWISI) is 32.2.  Typhoon Danas is similar in size and intensity to Hurricane Sally when Sally hit Alabama in 2020.

Typhoon Danas will bring strong, gusty winds and heavy rain to Taiwan.  Heavy rain is likely to cause flash floods and mudslides.  Widespread outages of electricity are possible.  Typhoon Danas could also cause a storm surge of up to 10 feet (3 meters) along parts of the coast of Taiwan.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Mun continued to churn east of Japan.  At 11:00 a.m. EDT on Sunday the center of Tropical Storm Mun was located at latitude 33.9°N and longitude 149.4°E which put the center about 545 miles (875 km) east of Tokyo, Japan.  Mun was moving toward the north at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 982 mb.

Danas Intensifies to a Typhoon Southwest of Taiwan

Former Tropical Storm Danas intensified to a typhoon over the South China Sea southwest of Taiwan on Saturday.  At 5:00 p.m. EDT on Saturday the center of Typhoon Danas was located at latitude 21.4°N and longitude 118.3°E which put the center about 170 miles (275 km) southwest of Kaohsiung, Taiwan.  Danas was moving toward the north-northeast at 4 m.p.h. (6 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 977 mb.

Former Tropical Storm Dana intensified to a typhoon over the South China Sea southwest of Taiwan on Saturday.  The distribution of thunderstorms in Typhoon Danas became more symmetrical as Danas intensified.  More thunderstorms developed near the center of Danas’ circulation.  More thunderstorms also formed in bands revolving around the center of Typhoon Danas.  Storms near the center of Danas generated upper level divergence that pumped mass away from the typhoon.  The removal of mass caused the surface pressure to decrease.

The size of the circulation around Typhoon Danas increased as Danas intensified.  Winds to typhoon force extended out 35 miles (55 km) from the center of Danas’ circulation.  Winds to tropical storm force extended out 140 miles (220 km) from the center of Typhoon Danas.

Typhoon Danas will move through an environment mostly favorable for intensification during the next 18 hours.  Danas will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the western part of an upper level ridge over that is centered east of Taiwan.  The upper level ridge will produce southwesterly winds that will blow toward the top of Danas’ circulation.  Those winds will cause some vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification. Typhoon Danas will intensify during the next 18 hours.  Danas could intensify rapidly at times.

Typhoon Danas will move around the western end of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Danas toward the north-northeast during the next 24 hours.  On its anticipated track, Typhoon Danas will approach the west coast of Taiwan in 18 hours.

Typhoon Danas will bring strong winds and locally heavy rain to Taiwan. Heavy rain is likely to cause flash floods. Typhoon Danas could also cause a storm surge of up to 10 feet (3 meters) along parts of the coast of Taiwan.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Mun continued to churn east-southeast of Japan.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Mun was located at latitude 32.0°N and longitude 148.9°E which put the center about 575 miles (925 km) east-southeast of Tokyo, Japan.  Mun was moving toward the northeast at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 983 mb.

Tropical Storm Danas Forms Southwest of Taiwan

Tropical Storm Danas formed over the South China Sea southwest of Taiwan on Friday.  At 5:00 p.m. EDT on Friday the center of Tropical Storm Danas was located at latitude 20.2°N and longitude 117.3°E which put the center about 265 miles (430 km) southwest of Kaohsiung, Taiwan.  Danas was moving toward the west at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 994 mb.

A low pressure system over the South China Sea southwest of Taiwan strengthened on Friday and the Japan Meteorological Agency designated the system as Tropical Storm Danas.

The distribution of thunderstorms in Tropical Storm Danas was asymmetrical.  Thunderstorms were occurring in bands in the southern half of Danas’ circulation.  Bands in the northern half of Tropical Storm Danas consisted primarily of showers and lower clouds.  Storms near the center of Danas generated upper level divergence that pumped mass away to the south of the tropical storm.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Storm Danas was small.  Winds to tropical storm force extended out 70 miles (110 km) from the center of Danas’ circulation.

Tropical Storm Danas will move through an environment mostly favorable for intensification during the next 24 hours.  Danas will move over water where where the Sea Surface Temperatures are near 29°C.  It will move under the southern part of an upper level ridge over eastern China.  The upper level ridge will produce northeasterly winds that will blow toward the top of Danas’ circulation.  Those winds will cause moderate vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Tropical Storm Danas will intensify during the next 24 hours.  Danas could strengthen to a typhoon during the weekend,

Tropical Storm Danas will move around the western end of a high pressure system over the Western North Pacific Ocean.  The high pressure system will steer Danas toward the north during the next 24 hours.  On its anticipated track,  Tropical Storm Danas will move toward the Taiwan Strait.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Mun continued to meander southeast of Japan.  At 5:00 p.m. EDT on Friday the center of Tropical Storm Mun was located at latitude 30.8°N and longitude 146.3°E which put the center about 485 miles (780 km) southeast of Tokyo, Japan.  Mun was moving toward the northeast at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 985 mb.

Tropical Storm Danas Speeds Toward South Korea

Tropical Storm Danas sped toward South Korea on Friday as it moved quickly north-northeast over the East China Sea.  At 11:00 a.m. EDT on Friday the center of Tropical Storm Danas was located at latitude 32.3°N and longitude 125.1°E which put it about 190 miles (305 km) south-southwest of Mopko, South Korea.  Danas was moving toward the north-northeast at 19 m.p.h. (30 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 987 mb.

The distribution of thunderstorms around Tropical Storm Danas remained asymmetrical on Friday.  The strongest thunderstorms were occurring in bands well to the east of the center of circulation.  Bands closer to the center and on the western side of the circulation consisted primarily of showers and lower clouds.  An upper level trough over eastern China was producing southwesterly winds which were blowing toward the top of the circulation.  Those winds were causing moderate vertical wind shear and they were the reason for the asymmetrical distribution of thunderstorms.  The wind field also exhibited the effects of the wind shear.  Winds to tropical storm force extended out about 200 miles (320 km) from the center of Danas on the eastern side of the circulation, but only extended out about 120 miles (195 km) on the western side of the tropical storm.

Tropical Storm Danas will remain in an environment only marginally favorable for intensification until it makes landfall in South Korea.  Danas will move over water where the Sea Surface Temperature is near 30°C.  The upper level trough over eastern China will continue to cause moderate vertical wind shear.  Tropical Storm Danas could intensify a little during the next 12 hours, but it will weaken after the center moves over South Korea.

Tropical Storm Danas will move around the western end of a subtropical ridge over the western North Pacific Ocean.  The ridge and the upper level trough will interact to steer Danas rapidly toward the north-northeast.  On its anticipated track the center of Tropical Storm Danas will make landfall on the southwestern coast of South Korea in about 12 hours.  Danas will bring gusty winds and locally heavy rain to South Korea on Saturday.  The heaviest rain will fall over the southeastern half of South Korea.  Locally heavy rain in that region could cause flash floods.  The outer rainbands of Tropical Storm Danas could also drop locally heavy rain over western Kyushu.

Tropical Storm Danas Nears Southern Ryukyu Islands

Tropical Storm Danas moved near the southern Ryukyu Islands late on Wednesday.  At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Danas was located at latitude 23.9°N and longitude 124.1°E which put it about 30 miles (50 km) south of Ishigaki, Japan.  Danas was moving toward the north at 21 m.p.h. (34 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 990 mb.

The circulation around Tropical Storm Danas exhibited a little more organization on Wednesday.  More thunderstorms formed near the center of circulation and several bands of showers and thunderstorms formed in the eastern half of the circulation.  The bands north and west of the center consisted primarily of showers and lower clouds.  Storms near the center began to generate upper level divergence which pumped mass away to the northeast of the tropical storm.  Winds to tropical storm force extended out about 125 miles (200 km) from the center of circulation.

Tropical Storm Danas will move into an environment somewhat favorable for intensification.  Danas will move over water where the Sea Surface Temperature is near 30°C.  A small upper level low near Taiwan will produce southwesterly winds which blow toward the top of the circulation around Tropical Storm Danas.  Those winds were the reason why the stronger rainbands were in the eastern half of the circulation.  Those winds will cause moderate vertical wind shear, which will inhibit intensification.  However, the shear will have less of an effect since Danas will move in the same direction as the upper level winds.  Tropical Storm Danas is likely to intensify during the next 24 hours and there is a chance it could strengthen into a typhoon.

Tropical Storm Danas will move around the western end of a subtropical ridge over the western North Pacific Ocean.  The ridge will steer Danas toward the north-northeast.  On its anticipated track Tropical Storm Danas will move through the southern Ryukyu Islands during the next few hours.  Danas will bring gusty winds and locally heavy rain when it passes over those islands.  Tropical Storm Danas will move over the East China Sea toward southwestern Japan and South Korea during the next several days.

Tropical Storm Danas Forms East of Luzon

Tropical Storm Danas formed east of Luzon on Tuesday.  A distinct low level center of circulation developed in an area of low pressure east of Luzon and the Japan Meteorological Agency designated the system as Tropical Storm Danas.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Danas was located at latitude 17.5°N and longitude 123.1°E which put it about 80 miles (130 km) east of Tuguegarao, Philippines.  Danas was moving toward the west at 4 m.p.h. (6 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 994 mb.

The distribution of thunderstorms around Tropical Storm Danas was highly asymmetrical.  There were a few thunderstorms just to the southwest of the center of circulation, but most of the thunderstorms were occurring in a band on the far western edge of the circulation around Danas.  Bands in other parts of the circulation consisted primarily of showers and lower clouds.  Tropical Storm Danas was moving around the southeastern portion of an upper level ridge over east Asia.  The ridge was producing strong easterly winds which were blowing across the top of the circulation around Danas.  The easterly winds were causing strong vertical wind shear and the wind shear was causing the asymmetric distribution of thunderstorms.  The circulation around Tropical Storm Danas was large.  Winds to tropical storm force extended out about 200 miles (320 km) from the center of circulation.

Tropical Storm Danas will move into an environment that is only marginally favorable for intensification.  Danas will move over water where the Sea Surface Temperature is near 31°C.  So, there is plenty of energy in the upper ocean.  The strong upper level easterly winds are expected to weaken somewhat during the next several days.  If those winds weaken, then there will be less vertical wind shear and Tropical Storm Danas could strengthen.  If the upper level winds remain strong, then Danas will not strengthen and it could weaken to a tropical depression.  The forecast is for very slow intensification during the next 24 to 48 hours.

Since there are not a lot of taller thunderstorms near the center of Tropical Storm Danas, it will be steered by the winds in the lower troposphere.  Danas will move around the western end of a subtropical ridge over the Western North Pacific Ocean.  The ridge will turn Danas toward the north on Wednesday.  On its anticipated track the center of Tropical Storm Danas will remain east of Luzon.  The center of Danas could be near southeastern Taiwan in 24 to 36 hours.  Tropical Storm Danas could be near the east coast of China in about three days.  The primary risks will be locally heavy rain and flash floods.